Remove the PORTNAME from postgreql-client. PORTNAME is set by
MASTERDIR/Makefile[1]. Improve the CONFLICTS messages[2]. Fix the DEPENDS
so that MIT krb5 depends on security/krb5, not heimdal[3]. Add a file that
was missing in the upgrade that has PostgreSQL log to syslog by default[4].
PR: [4] Originally submitted in ports/59402
Submitted by: [1,2,4] maintainer
[3] keoki seu <keoki@camelot.physics.wm.edu>